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Haskell Weekly News
http://sequence.complete.org/hwn/20090405
Issue 112 - April 05, 2009
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Welcome to issue 112 of HWN, a newsletter covering developments in the
[1]Haskell community.
Announcements
hgettext-0.1.5 - GetText based internationalization of Haskell
programs. Vasyl Pasternak [2]announced a new release of the [3]hgettext
package for internationalization of Haskell programs, which now
supports distribution and installation of PO files.
Buster 0.99.1, a library for application orchestration that is not FRP.
Jeff Heard [4]announced the release of [5]Buster, an FRP-like framework
for constructing reactive programs with a bus model.
Call for Contributions - Haskell Communities and Activities Report, May
2009 edition. Janis Voigtlaender [6]issued a call for contributions to
the 16th edition of the [7]Haskell Communities & Activities Report. The
submission deadline is 1 May 2009. If you are working on any project
that is in some way related to Haskell, please write a short entry and
submit it. Even if the project is very small or unfinished or you think
it is not important enough -- please reconsider and submit an entry
anyway!
fad 1.0 -- Forward Automatic Differentiation library. Bjorn Buckwalter
[8]announced the initial release of the Haskell [9]fad library,
developed by Barak A. Pearlmutter and Jeffrey Mark Siskind. Fad
provides Forward Automatic Differentiation (AD) for functions
polymorphic over instances of 'Num'.
hledger 0.4 released. Simon Michael [10]announced the release of
[11]hledger 0.4, a text-mode double-entry accounting tool. It reads a
plain text journal file describing your transactions and generates
precise activity and balance reports. Changes include the ability to
serve reports in a web browser, and many other fixes and improvements.
GHC version 6.10.2. Ian Lynagh [12]announced a new patchlevel release
of [13]GHC. This release contains a number of bugfixes relative to
6.10.1, including some performance fixes; see the [14]release notes.
Beta of Leksah IDE available. Jürgen Nicklisch-Franken [15]announced
release 0.4.4 of [16]Leksah, the Haskell IDE written in Haskell.
Current features include on the fly error reporting with location of
compilation errors, completion , import helper for constructing import
statements, module browser with navigation to definition, project
management support based on Cabal with a visual editor, "source candy",
and more.
satchmo: monadic SAT encoding library. Johannes Waldmann [17]announced
a preliminary version of [18]satchmo, a monadic library for encoding
boolean and integral number constraints to CNF-SAT. It uses [19]minisat
as a backend solver.
vacuum-cairo: a cairo frontend to vacuum for live Haskell data
visualization. Don Stewart [20]announced the release of
[21]vacuum-cairo, a Haskell library for interactive rendering and
display of values on the GHC heap using Matt Morrow's vacuum library.
This library takes vacuum's output, generates dot graph format from it,
renders it to SVG with graphviz, and displays the resulting structure
using the gtk2hs Cairo vector graphics bindings ... all at the GHCi
command line. Watch some [22]screencasts!
vacuum: extract graph representations of ghc heap values.. Matt Morrow
[23]announced the release of [24]vacuum, a library for extracting graph
representations of values from the GHC heap, which may then be further
processed and/or translated to Graphviz dot format to be visualized.
new release of HTTP, version 4000.0.5. Sigbjorn Finne [25]announced a
[26]new version of the HTTP package, which includes a bunch of fixes
and cleanups along with some API documentation.
type-level programming support library. spoon [27]asked for feedback on
a [28]support library for type level programming.
cmonad 0.1.1. Lennart Augustsson [29]announced the [30]CMonad package,
which allows one to write Haskell code in a C style.
Marketing Haskell. Ketil "Simon Peyton-Jones" Malde [31]announced the
new [32]official Haskell mascot.
Haskell Platform: status update and call for volunteers. Duncan Coutts
gave an [33]update on the status of the [34]Haskell Platform. There are
no more policy questions to resolve for the first release. It is a
matter of getting things done. The first platform release will contain
ghc-6.10.2, the "extra libs", haddock, happy and alex, and the cabal
command line tool and it's dependencies. We are calling for volunteers
for an action group. We need volunteers to take charge of various
platforms and to manage the overall release. See Duncan's email for a
list of what is needed, and volunteer!
Blog noise
[35]Haskell news from the [36]blogosphere.
* Jeff Heard: [37]Major updates to Buster.
* Bjorn Buckwalter: [38]ANNOUNCE: fad 1.0---Forward Automatic
Differentiation for Haskell.
* Roman Cheplyaka: [39]Hpysics + GrapeFruit (and hackathon).
* Joachim Breitner: [40]Bejeweled AI in Haskell.
* >>> iampalmmute: [41]Vacuum + Ubigraph. Visualizing Haskell values
in 3D.
* Jeff Heard: [42]ANN: Buster, the not quite entirely unlike FRP
library..
* Edward Kmett: [43]Reflecting On Incremental Folds.
* beelsebob: [44]How you should(n't) use Monad.
* Sean Leather: [45]Incremental attributes.
* Jeff Heard: [46]Almost, but not quite entirely unlike FRP..
* >>> Gregory Collins: [47]Building a website with Haskell, part 2.
* >>> Rubin Mcgowan: [48]Irradiation Tracing in Haskell.
* Conal Elliott: [49]Notions of purity in Haskell.
* mightybyte: [50]Finished HAppS Application.
* Sean Leather: [51]Experiments with EMGM: Emacs org files.
* Yi: [52]Haddock is back.
* >>> Lab 49: [53]Does Haskell Support Subtyping? It Depends..
* >>> Tim Lopez: [54]Haskell Performance: Lowercase.
* >>> Gregory Collins: [55]Building a website with Haskell, part 1.
* happstack.com: [56]Happstack-powered Website launched by Gregory
David Collins.
* >>> LispCast: [57]Writing map in Haskell.
* >>> hellfeuer: [58]Laziness and Dynamic Programming.
* >>> Leon Smith: [59]Lloyd Allison's Corecursive Queues.
Quotes of the Week
* mstr: haskell is like f'gg'fggf'fg'g'fg'foldliftM2 f g ''f' :)
* simonmar: Wondering how popular Haskell needs to become for intel
to optimize their processors for my runtime, rather than the other
way around
* quicksilver: [about uninstalling packages installed with
cabal-install] packages are for life, not just for christmas.
* Ethereal: If this conversation had been had in #python #ruby or
#php it would have lots of angry people shouting about how it
doesn't matter or isn't true or isn't important and what's the
point, and no, you guys are like ahhh but no, your preconceived
notions of dimensional space are so passe.
* Duqicnk: a monad is like a train that runs backwards in time, which
is made of tiny chocolate robots
* jfredett: I do all of my version numbers in Roman Numerals...
* Cale: But in another sense, functional programmers are applied
logicians who spend all their time proving trivial theorems in
interesting ways in an inconsistent intuitionist logic.
About the Haskell Weekly News
New editions are posted to [60]the Haskell mailing list as well as to
[61]the Haskell Sequence and [62]Planet Haskell. [63]RSS is also
available, and headlines appear on [64]haskell.org.
To help create new editions of this newsletter, please see the
information on [65]how to contribute. Send stories to byorgey at cis
dot upenn dot edu. The darcs repository is available at darcs get
[66]http://code.haskell.org/~byorgey/code/hwn/ .
References
1. http://haskell.org/
2. http://article.gmane.org/gmane.comp.lang.haskell.cafe/56301
3. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/hgettext
4. http://article.gmane.org/gmane.comp.lang.haskell.cafe/56209
5. http://vis.renci.org/jeff/buster
6. http://article.gmane.org/gmane.comp.lang.haskell.cafe/56148
7. http://www.haskell.org/communities/
8. http://article.gmane.org/gmane.comp.lang.haskell.cafe/56268
9. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/fad
10. http://article.gmane.org/gmane.comp.lang.haskell.general/17054
11. http://hledger.org/
12. http://article.gmane.org/gmane.comp.lang.haskell.general/17041
13. http://www.haskell.org/ghc/
14. http://haskell.org/ghc/docs/6.10.2/html/users_guide/release-6-10-2.html
15. http://article.gmane.org/gmane.comp.lang.haskell.cafe/56116
16. http://www.leksah.org/
17. http://article.gmane.org/gmane.comp.lang.haskell.cafe/56107
18. http://dfa.imn.htwk-leipzig.de/satchmo/
19. http://minisat.se/
20. http://article.gmane.org/gmane.comp.lang.haskell.cafe/56063
21. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/vacuum-cairo
22. http://www.youtube.com/watch?v=oujaqo9GAmA
23. http://article.gmane.org/gmane.comp.lang.haskell.cafe/56062
24. http://moonpatio.com/vacuum/
25. http://article.gmane.org/gmane.comp.lang.haskell.cafe/56058
26. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/HTTP
27. http://article.gmane.org/gmane.comp.lang.haskell.cafe/55983
28. http://www.killersmurf.com/projects/typelib
29. http://article.gmane.org/gmane.comp.lang.haskell.cafe/55936
30. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/cmonad
31. http://article.gmane.org/gmane.comp.lang.haskell.general/17021
32. http://www.haskell.org/pipermail/haskell/attachments/20090401/9fb8fa05/haskell-mascot.jpg
33. http://article.gmane.org/gmane.comp.lang.haskell.general/17020
34. http://www.haskell.org/haskellwiki/Haskell_Platform
35. http://planet.haskell.org/
36. http://haskell.org/haskellwiki/Blog_articles
37. http://vis.renci.org/jeff/2009/04/03/major-updates-to-buster/
38. http://flygdynamikern.blogspot.com/2009/04/announce-fad-10-forward-automatic.html
39. http://physics-dph.blogspot.com/2009/04/hpysics-grapefruit-and-hackathon.html
40. https://www.joachim-breitner.de/blog/archives/324-Bejeweled-AI-in-Haskell.html
41. http://www.youtube.com/watch?v=3mMH1cHWB6c
42. http://vis.renci.org/jeff/2009/04/01/ann-buster-the-not-quite-entirely-unlike-frp-library/
43. http://comonad.com/reader/2009/incremental-folds/
44. http://noordering.wordpress.com/2009/03/31/how-you-shouldnt-use-monad/
45. http://feedproxy.google.com/~r/splonderzoek/~3/4B0bHoeTCeQ/incremental-attributes.html
46. http://vis.renci.org/jeff/2009/03/31/almost-but-not-quite-entirely-like-frp/
47. http://gregorycollins.net/posts/2009/03/30/building-a-website-part-2
48. http://rubinmcgowaneh.blogspot.com/2009/03/irradiation-tracing-in-haskell.html
49. http://conal.net/blog/posts/notions-of-purity-in-haskell/
50. http://softwaresimply.blogspot.com/2008/02/finished-happs-application.html
51. http://feedproxy.google.com/~r/splonderzoek/~3/6bxI33NIRMc/experiments-with-emgm-emacs-org-files.html
52. http://yi-editor.blogspot.com/2009/03/haddock-is-back.html
53. http://blog.lab49.com/archives/2954
54. http://www.brool.com/index.php/haskell-performance-lowercase
55. http://gregorycollins.net/posts/2009/03/28/building-a-website-part-1
56. http://blog.happstack.com/2009/03/28/happstack-powered-website-launched-by-gregory-david-collins/
57. http://www.lispcast.com/haskell-map.html
58. http://caffeinatedcode.wordpress.com/2009/03/26/laziness-and-dynamic-programming/
59. http://blog.melding-monads.com/2009/03/09/lloyd-allisons-corecursive-queues/
60. http://www.haskell.org/mailman/listinfo/haskell
61. http://sequence.complete.org/
62. http://planet.haskell.org/
63. http://sequence.complete.org/node/feed
64. http://haskell.org/
65. http://haskell.org/haskellwiki/HWN
66. http://code.haskell.org/~byorgey/code/hwn/